Engine - Intermittent Warm Engine Rattle Noise/Rough Idle/DTC's
TSB 12-7-1007/30/12
5.4L INTERMITTENT RATTLE NOISE / ROUGH IDLE
WHEN ENGINE IS AT OPERATING TEMPERATURE
FORD:
2004-2010 F-150
2005-2010 F-250, F-350
2005-2012 Expedition
LINCOLN:
2005-2012 Navigator
2006-2008 Mark LT
ISSUE
Some 2004-2010 F-150, 2005-2010 F-Super Duty, 2005-2012 Expedition, Navigator and 2006-2008 Mark LI vehicles equipped with a 5.4L 3V engine may exhibit an intermittent rattle noise/rough idle when engine is at operating temperature. The issue is caused by oscillating cam timing, diagnostic trouble codes (DTCs) P0022, P0021, P0340, and/or P0341 may be stored in the powertrain control module (PCM).
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
1. Using the Integrated Diagnostic System (IDS) scan tool or equivalent monitor cam solenoid duty cycle and cylinder head temperature (CHI) Parameter Identification (PIDs):
a. Start IDS
b. Select Data Logger
c. Select PIDs VCTDC, VCTDC2, and CHI
2. With the engine idling at normal operating temperature CHI above 93 °C (200 °F) apply the parking brake and hold service brake pedal firmly with transmission selector lever in (D). Raise engine RPMs from idle to approximately 1500 RPMs and release the throttle. Does the vehicle exhibit a rattle type noise with a rough idle and are the cam solenoid duty cycle PID values oscillating after RPMs return to idle speed? (Figure 1)
a. Yes - Proceed to Step 3.
b. No - This article does not apply. Refer to Workshop Manual (WSM), Section 303-00 for normal diagnostics.
3. Replace both the left and right Variable Camshaft Timing (VCT) Oil Control solenoids. Refer to WSM, Section 303-04B for 2004 vehicles OR 303-14 for 2005-2012 vehicles.
Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage
Warranty/ESP coverage limits/policies/prior approvals are not altered by a TSB. Warranty/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.
OPERATION DESCRIPTION TIME
120710A 2006 Mark LT, 2004-2006 0.7 Hr.
F-150, 2005-2006
Expedition, Navigator:
Diagnose And Replace
Both VCT Solenoids (Do
Not Use With Any Other
Labor Operations)
120710A 2007-2010 F-Super Duty 2.7 Hrs.
250/350: Diagnose And
Replace Both VCT
Solenoids (Do Not Use
With Any Other Labor
Operations)
120710A 2007-2012 Expedition, 3.2 Hrs.
Navigator: Diagnose And
Replace Both VCT
Solenoids (Do Not Use
With Any Other Labor
Operations)
120710A 2007-2010 F-150, 3.6 Hrs.
2007-2008 Mark LT:
Diagnose And Replace
Both VCT Solenoids (Do
Not Use With Any Other
Labor Operations)
120710A 2005-2006 F-Super Duty 0.6 Hr.
250/350: Diagnose And
Replace Both VCT
Solenoids (Do Not Use
With Any Other Labor
Operations)
DEALER CODING
CONDITION
BASIC PART NO. CODE
6M280 42
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